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Overview

The Series 2 track feller bunchers feature smoother hydraulic performance, better fuel economy, a more comfortable operator station and better visibility. The Cat® 552 Series 2 is a full tail swing machine designed for high production clear cut and for clear or select cut in rough terrain. It is also a leveling machine for more comfort on steep terrain.

Standards

Power Train

Powerful Performance

The Cat® C9 electronically controlled ACERT™ engine delivers power while meeting all current U.S. EPA emission standards. All models contain a fuel/water separator, engine air intake heater and a dual-stage combination air cleaner with precleaner.

High Capacity Cooling System

The side-by-side radiator/oil cooler gives excellent cooling capacity for high production bunching and harvesting. On-demand Flexxaire fan activates only when required and allows the cooling fan to purge debris from the radiator area, keeping a cleaner cooling system. The IQAN control system automatically adjusts the Flexxaire fan blade angle, reducing horsepower demand and lowering fuel consumption. The purge cycle frequency and duration can be set by operator in the cab to suit varying application conditions.

Engine Oil

Cat engine oil is formulated to optimize engine life and performance and is recommended for use in Cat diesel engines. Extended oil change intervals reduce maintenance and machine downtime.

Low Exhaust Emissions

Hydraulic Packages

Electric Hydraulic Oil fill Pump

An easy accessible service wand allows hydraulic oil to be pumped through the hydraulic filtering system and into the tank. This reduces maintenance downtime and helps to maintain oil cleanliness requirements.

Variable Displacement Pump

All Cat FTS Series 2 track feller bunchers are equipped with variable displacement pumps for travel and implement functions and a dedicated variable displacement pump for felling attachments. Optional hydraulics for dangle harvesting or processor heads and intermittent saw heads are available for all models.

Valve Design Flexibility

Two hydraulic implement valves are available to allow configuration of machine to operate various felling heads. Valve designs allow maximizing of machine multi-functioning performance. Valve 1) Felling heads requiring high flow 170-190 L/min (45-50 gpm) to the grab and accumulator arms. Typically have one cylinder operating each arm, two cylinders per arm set. Valve 2) Felling heads requiring low flow 110-120 L/min (29-32 gpm) to operate grab and accumulator arms. Typically one hydraulic cylinder and a link arm activate the arm set. Note: Consult the work tool manufacturer for flow requirements before selecting one of the above Hydraulic Arrangements.

Cat Hydraulic Oil

Provides maximum protection against mechanical and corrosive wear in all hydraulic systems. It's high zinc content reduces wear, and extends pump life. Biodegradable hydraulic oil (HEES) is also available from your Cat dealer and provides an environmentally-sound alternative to mineral based oils.

ToughGuard™ Hoses

Abrasion resistant hoses along the boom and stick provide strength and flexibility. The ToughGuard cover consists of a thin layer of UHMW polyethylene bonded to the rubber cover, providing exceptional abrasion resistance.

Operator Station

Operator Comfort

The operator station is designed with conveniently placed joysticks and an ergonomically designed air ride seat, reducing operator fatigue and providing easy operation. An HVAC system with updated air ducts provides better cooling and heating. A large side window with side screen allows fresh air into the cab, and an isolated mounted cab and engine reduces sound levels and vibration for a quiet and comfortable operator environment. Ergonomically located pedals with side-by-side foot rests provide operator comfort while operating machine travel.

Monitor

The IQAN MD3 display allows the operator to continuously monitor the operating system of the machine. The monitor has been downsized slightly to improve the operator's line of sight out the right front corner of the cab. The IQAN control system allows the operator to adjust control parameters, maximizing performance and productivity.

Electrical System

Series 2 track feller bunchers feature a 24-volt electrical system with an in-cab 24-12 volt converter, dual in-cab 12 volt power points and one 24 volt power point. Power is provided by two 12 volt maintenance free batteries and 95 amp alternator. An optional cold weather starting attachment may be selected to provide two additional batteries, an HD starter and HD cables.

Other Features:

• Large storage compartment area behind the seat provides sufficient room for a lunch box, hard hat and work tools

Leveling System

Tilt Mechanism

With the most robust tilt mechanism in the industry, the 552 Series 2 tilter has a patented 3-cylinder tilt mechanism with simultaneous forward and side-by-side tilting. Trunnion cylinders are mounted on 51 mm (2 in) steel plates and transfer vertical loads down to the interface of the track frames and carbody, putting the load into the track and ground.

Cylinders

Ground Clearance

FTS machines have excellent ground clearance and open carbody design. This provides increased mobility by eliminating interference with large stumps, rocks or other obstacles encountered in rugged working conditions.

Undercarriage

Travel Motor

The proven final drives and travel motors provide up to 47 174 kg (104,000 lb) of tractive effort on the 552 Series 2, giving excellent traction and power to the ground.

Track Guards

All models feature full length bolt-on track guards to maximize shoe support in all types of terrain.

Carbody

The 552 Series 2 model features a bolted track frame to carbody design. This provides a standard gauge width, or allows adjustment to a wide gauge width to improve machine stability, and increase productivity on steep slope applications. The carbody design provides maximum ground clearance and a smooth under-surface to resist snagging on debris or large obstacles. The precision welded, high-wide carbody has strong frames that reduce flexing and increase the durability of rollers and track links throughout the life of the machine.

Carrier Rollers

This FTS Series 2 model offers a choice of either standard single flange carrier rollers for moderate terrain and warm climates or star carrier rollers for severe terrain and cold climate applications. Nine bottom rollers per side.

Boom and Stick

The 552 Series 2 track feller buncher dominates in lift capacity over competitors in its size class. With market leading lift capacity, reach and tight stick tuck-in capabilities, this machine delivers high performance. Optional long and short feller buncher configurations are available and offer the same high performance.

Flexxaire Fan

Standard Flexxaire fan operates only when required and allows the cooling fan to purge debris from the radiator area, reducing cleaning maintenance time. The purge cycle frequency and duration can be set by operator in the cab to suit varying application conditions.

Clam-Shell Service Doors

The hydraulically actuated clam-shell service doors on both sides of machine provide easy and quick access, reducing maintenance downtime.

Customer Support

Caterpillar is known the world over for the quality of customer support from its dealer network - the industry's best. No matter where you are, the expertise of a Cat dealer is always nearby. Your local Cat dealer is your forestry consultant who can recommend the machines, work tools and services to maximize your operation and provide the support to keep you at top productivity.

24-hour parts availability, where and when you need them, to minimize expensive downtime

Remanufactured parts that carry the same warranty as new parts at a reduced cost